document.write( "Question 96988: Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%? \n" ); document.write( "
Algebra.Com's Answer #70612 by coyote(32)![]() ![]() ![]() You can put this solution on YOUR website! Lane invested $22,000, part at 8% and part at 7%. If the total interest at the end of the year is $1,710, how much did she invest at 8%?\r \n" ); document.write( "\n" ); document.write( "I=prt \n" ); document.write( "1710 = .08x + .07(22000 - x) \n" ); document.write( "Multiply both sides by 100 to remove the decimals \n" ); document.write( "171,000 = 8x + 7x(22000 - x) \n" ); document.write( "171,000 = 8x + 154,000 - 7x \n" ); document.write( "171,000 = x + 154,000 \n" ); document.write( "17,000 = x\r \n" ); document.write( "\n" ); document.write( "To check: \n" ); document.write( "17,000 * 8% = 1360 \n" ); document.write( "(22,000 - 17,000) = 5,000 * 7% = 350 \n" ); document.write( "So 1360 + 350 =1710 \n" ); document.write( " |